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(No Model.)

A. J. HUBER; HYDROCARBON BURNER.

Patented Jan. 7, 1896.

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AM. PHOTO-LWO.WASIIINFIDN. D.C.

. UN ITED STATES ALLEN J. HUBER,

PATENT OFFICE.

OF MINNEAPOLIS, MINNESOTA, ASSIGNOR OF ONE-HALF TO CHARLES H. IIUHN, OF SAME PLACE.

HYDROCARBON-BURNER.

SPECIFICATION forming part of Letters Patent No. 552,709, dated January 7, 1896.

Application filed November 20, 1893. Serial No. 491,491. (No model.)

To all whom it may concern.-

Be it known that I, ALLEN J. HUBER, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Hydrocarbon-Burners, of which the following is a specification.

My invention relates to an improvement in hydrocarbon-burners; and it consists in a generator, located upon the top of the burner, and avalve or needle for controlling the downward escape of the vapor therefrom, combined with an aerating chamber or chambers, largest at their upper ends, means for comniingling air with the vapor in each chamber, and a spreader placed at the bottom of the burner, as will be more fully described hereinafter.

The objects of my invention are to produce a burner especially adapted for burning kerosene, and in which the heat is thrown low down and perfectly utilized, and to use double mixing-chambers so that the commingling of vapor and air shall take place at more than one point and thus avoid the noise usually made by such burners while in use. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a vertical section of my burner through the line a b, Fig. 4:. Fig. 2 is a vertical section of the same through the line 3 .2, Fig. 4. Fig. 3 is a detachable key for open- 7 ing and closing the oil-supply cut-off. Fig. 4

is a top view of the burner.

Similar numerals refer to similar parts throughout the several views.

The supply-pipe 1 has any convenient cutoff 2, which may be opened and closed by means of a detachable key 3. The oil is fed through this supply-pipe into the generator 4:, where it is converted into gas and escapes through a jet-orifice 5, opening downward ard 9, and provided with a link 10,which connects the outer end of the needle 7 to the le ver 8. By means of this needle the jet-orifice 5 may be closed or opened and the form of the jet of gas escaping into the mixer 0 and the amount thereof may be controlled, besides any obstruction in the orifice 5 may be removed.

. Into the aerating-chamber 6 one or more fresh-air pipes 11 open. I prefer two such pipes opening into the chamber at opposite sides and extendingout or down to receive fresh air. The chamber 6 opens into the second aerating-chamber 12, while an annular cover 13 may be provided for the top of the chamber 12 with air-inlet holes 14 therein. Below the chamber 12 a spreader 15 is placed. The chamber may be supported upon' the spreader 15 in any appropriate manner. For that purpose I prefer a stand having an annular top 16 and legs 17, which are let into sockets in the spreader 15. To regulate the distance between the lower edge of the chamber 12 and the spreader 15, small disks of metal 18 maybe placed under the legs 17 in the bottom of the sockets or removed as the case may require.

I am aware that various oil or hydrocarbon burners have heretofore been devised for the purpose of converting the oil into gas by the heat of the flame applied to a generator, from which the gas is conducted by a pipe or pipes to a jet-pipe, from which it is allowed to escape, is mixed with the air and so burns; but it will be noticed that I provide a double aerating-chamber and that both the chamber 6 and the chamber 12 are large at the upper part where the gas enters, and are contracted below where it escapes from them, being substantially the shape of an inverted bell. This is important, for I find that it produces a checking of the currents of air and gas passing through the chambers and results in a more complete mixing of the air and gas, more com- 5 plete combustion and much greater heat. Besides being designed for a downdraft, when the burner is placedin a stove or furnace for heating purposes the heat is thrown low and is more perfectly utilized. If one of the aerat- 10o ing-chambers is omitted, good results can be obtained; but I find that by using the double mixing-chamber, so that the mixing of the gas with the air takes place at more than one point, the noise incident to such burners when in use is substantially removed and a most perfect combustion is effected.

The jet of gas projecting downward through the aerating-chambers causes a downdraft therein, which draws in the air through the air-pipes 11 and the air-inlets 14. Combustion begins at the lower portion of chamber 12, which is in part a combustion-chamber. \Vhen the moving column of flame and aerated gas strikes the spreader 15, it is thrown outward in all directions, thus spreading the flame and distributing the heat. The use of a coil or a large chamber as a generator is unnecessary, and a pipe to conduct the gas from the generator to the jet-orifice is dispensed with.

Good results can be obtained from my burner when reversed and placed within a stove so that the jet escapes upward, but those results are greatly enhanced by the downdraft.

WVhat I claim as my invention, and desire to secure by Letters Patent, is

1. An inlet pipe, a chamber connected thereto, and into which-the fluid to be vaporized is discharged, a valve extending through the chamber, a smaller upper commingling chamber into which the fluid or vapor is discharged from the receiving chamber, and air pipes connected to this upper commingling chamber, combined with a lower and larger commingling chamber having openings through its top for the introduction of fresh air; supports for the chambers, and a base separated from the lower edge of the lower commingling chamber to allow combustion to take place, substantially as shown.

2. In avapor burner, a horizontal receiving chamber located at the top of the burner, a Valve extending through it; and an. upper flaring commingling chamber having air pipes connected thereto, the outer ends of the pipes being made to extend out beyond the base; combined with a second flaring commingling chamber, larger than the upper one, but in substantially the same vertical line, and having openings through its top for the introduction of fresh air; a support and a base; there being a sufficient space between the lower edge of the lower commingling chamber and base to allow combustion to take place, substantially as described.

ALLEN J. HUBER. \Vitnosses:

CHAS. S. CAIRNS, L'AURA YHLIN. 

